Rank the following fish, from most to least, in terms of the amount of energy it must use to maintain its position (depth)in the water column over the long term.
1)physoclistus fish
2)physostomus fish
3)chondrichthyan fish
A) 1, 2, 3
B) 2, 3, 1
C) 2, 1, 3
D) 3, 1, 2
E) 3, 2, 1

Question

Quizplus · Accepted Answer

Chondrichthyan fish, such as sharks, have a heterocercal tail that provides lift, allowing them to maintain their position in the water column without using much energy. Physostomus fish have a gas-filled swim bladder that they can inflate or deflate to adjust their position in the water, which requires some energy but not as much as physoclistus fish. Physoclistus fish have a closed swim bladder that cannot be adjusted and must use more energy to maintain their position in the water column. Thus, chondrichthyan fish require the least amount of energy followed by physostomus fish, and physoclistus fish require the most energy.

Rank the Following Fish, from Most to Least, in Terms